Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal Sludge
Moisture content is an important factor affecting the geotechnical properties of solidified municipal sludge (MMS). Typical municipal sludge in China was chosen to investigate the effects of initial moisture content (defined as w0) on geotechnical properties of MMS solidified by self-developed CERSM...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Polymer Technology |
| Online Access: | http://dx.doi.org/10.1155/2020/8794076 |
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| author | Yijun Chen Xingxing He Ping Wang Yong Wan Xun Tan |
| author_facet | Yijun Chen Xingxing He Ping Wang Yong Wan Xun Tan |
| author_sort | Yijun Chen |
| collection | DOAJ |
| description | Moisture content is an important factor affecting the geotechnical properties of solidified municipal sludge (MMS). Typical municipal sludge in China was chosen to investigate the effects of initial moisture content (defined as w0) on geotechnical properties of MMS solidified by self-developed CERSM solidifying agent. In addition, the microstructure changes of solidified sludge samples in this study were explored with scanning electron microscopy and mercury intrusion porosimetry. Mechanical experiment results showed that the unconfined compressive strength, cohesion, and internal friction angle of the MMS increased with the decrease in initial moisture content, but the permeability coefficient changed oppositely. The permeability coefficient of solidified sludge samples was between 10−8 and 10−10 cm/s. But after the drying-saturated process, the permeability coefficient of MMS can be increased up to 4 times, mainly due to the formation of a considerable number of microconnected pores and microcracks in the process of drying. The research results are of great significance to the safe disposal and utilization of municipal sewage sludge in China. |
| format | Article |
| id | doaj-art-e0f3ca495be14530a0aae067290c01e9 |
| institution | Kabale University |
| issn | 0730-6679 1098-2329 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Polymer Technology |
| spelling | doaj-art-e0f3ca495be14530a0aae067290c01e92025-02-03T06:43:51ZengWileyAdvances in Polymer Technology0730-66791098-23292020-01-01202010.1155/2020/87940768794076Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal SludgeYijun Chen0Xingxing He1Ping Wang2Yong Wan3Xun Tan4State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaMoisture content is an important factor affecting the geotechnical properties of solidified municipal sludge (MMS). Typical municipal sludge in China was chosen to investigate the effects of initial moisture content (defined as w0) on geotechnical properties of MMS solidified by self-developed CERSM solidifying agent. In addition, the microstructure changes of solidified sludge samples in this study were explored with scanning electron microscopy and mercury intrusion porosimetry. Mechanical experiment results showed that the unconfined compressive strength, cohesion, and internal friction angle of the MMS increased with the decrease in initial moisture content, but the permeability coefficient changed oppositely. The permeability coefficient of solidified sludge samples was between 10−8 and 10−10 cm/s. But after the drying-saturated process, the permeability coefficient of MMS can be increased up to 4 times, mainly due to the formation of a considerable number of microconnected pores and microcracks in the process of drying. The research results are of great significance to the safe disposal and utilization of municipal sewage sludge in China.http://dx.doi.org/10.1155/2020/8794076 |
| spellingShingle | Yijun Chen Xingxing He Ping Wang Yong Wan Xun Tan Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal Sludge Advances in Polymer Technology |
| title | Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal Sludge |
| title_full | Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal Sludge |
| title_fullStr | Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal Sludge |
| title_full_unstemmed | Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal Sludge |
| title_short | Experimental Study of Moisture Content Effect on Geotechnical Properties of Solidified Municipal Sludge |
| title_sort | experimental study of moisture content effect on geotechnical properties of solidified municipal sludge |
| url | http://dx.doi.org/10.1155/2020/8794076 |
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